Luuk Kortekaas

TL;DR: An overview of their rich history is provided and the contemporary relevance of the spiropyrans is highlighted.

TL;DR: It is shown that the extent of acid-induced ring opening is controlled by matching both the concentration and strength of the acid used and with strong acids full ring opening to the Z-merocyanine isomer occurs spontaneously allowing its characterization by 1H NMR spectroscopy as well as UV/visSpectroscopy, and reversible switching between Z/E-isomerization by irradiation with UV and visible light.

TL;DR: Here it is shown that a bis-spiropyran photochrome, which is formed through coupling at the indoline 5-position using redox chemistry, exhibits pH-gated photochromism, with opening of the spiro moiety by irradiation by UV light and the expected reversion by either heating or irradiation with visible light gated by protonation/deprotonation.

TL;DR: It is shown that a multicomponent carbazole/naphthalene containing monomer (APCNDI) can form redox polymer films showing both p- and n- conductivity under ambient conditions and allows access to five distinct redox states, and a complex electrochromic response covering the whole of the UV/vis–NIR spectral region.

TL;DR: It is shown that readily accessible arylazoisoxazoles display a fast photoreversible solid-to-liquid phase transition and perform as excellent photore reversible adhesives, with a remarkable durability over 10 immediate reuse cycles without a loss in adhesive strength or an increase of the unprecedented response time.